It's not a SQLite problem per se, it's a problem with the android.database stuff, or the way you're using it. (Has nothing to do with database access.)
A HashMap referenced by android.database.sqlite.SQLiteDatabase.getDbStats is getting modified by another thread simultaneously. HashTable is threadsafe, but not HashMap. Presumably there's a restriction on android.database.sqlite.SQLiteDatabase.getDbStats and its kin with regard to access from multiple threads. (If not, there should be, or a HashTable should be used instead of the HashMap.) (Actually, looking at the SQLiteDatabase writeup I don't see any restrictions on multithread access so long as you haven't done setLockingEnabled(false), so this may well be an Android bug.) On Oct 19, 6:51 pm, Bret Foreman <[email protected]> wrote: > I'm doing some stress testing of my SQLite database using the testing > monkey and I got the following exception, which appears to be from > inside SQLite. My app has many threads accessing the database but all > of them do so in locking mode so I don't think this exception is my > fault. Any opinions on whether I should worry about this exception or > if it's just an artifact of the extremely fast monkey keyboard access? > > 10-19 16:38:38.443: ERROR/JavaBinder(2035): *** Uncaught remote > exception! (Exceptions are not yet supported across processes.) > 10-19 16:38:38.443: ERROR/JavaBinder(2035): > java.util.ConcurrentModificationException > 10-19 16:38:38.443: ERROR/JavaBinder(2035): at java.util.HashMap > $HashIterator.nextEntry(HashMap.java:795) > 10-19 16:38:38.443: ERROR/JavaBinder(2035): at java.util.HashMap > $KeyIterator.next(HashMap.java:822) > 10-19 16:38:38.443: ERROR/JavaBinder(2035): at > android.database.sqlite.SQLiteDatabase.getDbStats(SQLiteDatabase.java: > 2133) > 10-19 16:38:38.443: ERROR/JavaBinder(2035): at > android.database.sqlite.SQLiteDebug.getDatabaseInfo(SQLiteDebug.java: > 150) > 10-19 16:38:38.443: ERROR/JavaBinder(2035): at > android.app.ActivityThread$ApplicationThread.dump(ActivityThread.java: > 1793) > 10-19 16:38:38.443: ERROR/JavaBinder(2035): at > android.os.Binder.dump(Binder.java:222) > 10-19 16:38:38.443: ERROR/JavaBinder(2035): at > android.os.Binder.onTransact(Binder.java:201) > 10-19 16:38:38.443: ERROR/JavaBinder(2035): at > android.app.ApplicationThreadNative.onTransact(ApplicationThreadNative.java: > 407) > 10-19 16:38:38.443: ERROR/JavaBinder(2035): at > android.os.Binder.execTransact(Binder.java:288) > 10-19 16:38:38.443: ERROR/JavaBinder(2035): at > dalvik.system.NativeStart.run(Native Method) -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
